/Engine/Source/Runtime/Engine/Classes/Components/SplineComponent.h
struct FSplineCurves
FInterpCurveVec...
Position
Spline built from position data.
FInterpCurveFlo...
ReparamTable
Input: distance along curve, output: parameter that puts you there.
FInterpCurveQua...
Rotation
Spline built from rotation data.
FInterpCurveVec...
Scale
Spline built from scale data.
uint32
Version